Table of Contents
Advertisement
FREQUENTLY ASKED QUESTIONS
Q. When providing line voltage to the meter, can I tap off
of the same breaker I am monitoring?
A. Yes, the voltage can be pulled from the same breaker
being monitored.
Q. Can the meter's line voltage wires be run in the
same conduit as the sensor leads?
A. Yes, there will be no effect on the meter if the sensor
leads and line voltage wires are run in the same con-
duit.
Q. Can the meter communication wires and line volt-
age wires be run in the same conduit?
A. It is NOT recommended to run these wires together due
to noise concerns and their effects on the communica-
tions signal integrity. Communication wires can be
routed separately using the 1/2" conduit port.
Q. How do I find the cost for kWh and kW to bill my
tenants?
A. Your local utility bill should list the cost per kWh and
kW. If not, simply call your utility and ask them to pro-
vide you with the cost per kWh and kW.
Q. What size wire do I use for the line voltage leads?
A. These wires are normally #14 AWG, but be sure to
consult your local electrical codes for proper sizing
requirements.
Q. What size wire should I use to extend the current
sensor leads?
A. These wires are normally sized at #14-22 AWG, twisted
pair arrangement. Consult your local electrical codes
for proper sizing requirements.
Q. The load I need to monitor has parallel feeds. How
do I install the current sensors for this application?
A. There are two ways you can monitor parallel feeds.
One method is to clamp the sensors around all feed
wires for each phase (no additional reading multiplier
required). The second way to monitor parallel feeds is
to clamp the sensor around one of the feed wires for
each phase, and when you read the kWh meter the
final reading must be multiplied by the number of feed
wires for each phase.
Q. I have two subpanels I would like to monitor with
one meter. These subpanels are fed by different
transformers in the building. Can I parallel sensors
and monitor both panels with one meter?
A. No. These panels cannot be monitored by one meter
because they are different power sources. When you
parallel current sensors, all loads must be from the
same voltage source.
Q. I have five breakers in one subpanel I would like to
monitor with one meter. Can this be done without
having to parallel current sensors?
A. Yes. Simply run all the breaker wires through one set
of current sensors. Make sure all A phase circuits are
run through the A phase sensor, and the same for B &
C phases. The meter should be sized by the highest
amount of current being monitored by one sensor.
17
GREEN CLASS METER
62-0340-01
Advertisement
Table of Contents
